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Full text of "Circuits"

Dummy Camera 



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Dummy Camera 

Written By: Jonathan 



TOOLS: 


PARTS: 


Needlenose pliers (1) 


Resistor (1) 


Soldering iron (1) 


Resistor (1) 


Wire cutters (1) 


Pert board (1) 


aka side cutters 


555 timer (1) 


Wire strippers (1) 


Pin socket (8) 




Capacitor (1) 




LEDd) 




Resistor (1) 




Screw terminals (1) 




Wires (1) 




Batterv (2) 




Battery holder (1) 



SUMMARY 

I got all the parts necessary for the project at my local RadioShack. You can get them 
cheaper somewhere else, I'm sure. 



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Page 1 of 7 



Dummy Camera 



Step 1 — Dummy Camera 




i Here is it finished. I made this one about a week ago to test the circuit. So this one may 
differ a bit compared to the one we're going to build. 



Step 2 




• Here are the parts needed to 
complete the project. 



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Page 2 of 7 



Dummy Camera 



Step 3 




• Here is the schematic for the 
project. 



Step 4 




• First we add our 8-pin socket near the center of the PCB. 

• Then we add our screw terminal and LED. the positive (+) end of the led goes to the 
positive (+) end on the terminal. 

• Next we add the 1k resistor. To help with the final layout we put one lead of it in near pin 3 
on the socket. 



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Page 3 of 7 



Dummy Camera 



Step 5 




• Next we add the 10uF capacitor. 
Be aware of its positive and 
negative leads (negative should be 
facing down if the terminal is at the 
top). 



Step 6 




• Next come the rest of the resistors. The first is the 10k which goes closest to the 
capacitor. Then the 470 and 220 are joined together in series to make the equivalent of a 
680k. 



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Page 4 of 7 



Dummy Camera 
Step 7 



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• Solder all connections made so far. 



Step 8 




• After soldering all connections cut 
off the extra leads except for those 
on the capacitor and resistor. 



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Page 5 of 7 




• Next we connect the negative lead of the capacitor to pin 1 and negative terminal using 
leftover leads and wires. 

• Then we connect pins 8 and 4 together to the lead of the resistor, and then to the positive 
terminal. 



Step 10 







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Next connect pin 7 to the spot between the 10k and the 660k resistors. 



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Page 6 of 7 



Dummy Camera 



Step 11 




Connect pins 6 and 2 together and then to the spot between the capacitor and 10k resistor. 



Step 12 

• If you connected everything correctly, connect your battery to the circuit and let it sit for a 
couple of seconds. It should start to blink every 5 seconds. If not, check for short circuits 
or misconnected leads. 



Step 13 

• If you have any questions or comments please post them and I will help with what is 
possible. Or, email me at pickle2396@live.com. 

last generated on 201 2-1 1 -03 01 :50:48 AM. 



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Page 7 of 7